US 12,138,843 B2
Extruded hydrogel tubes and coaxial fibers and applications thereof
Alshakim Nelson, Seattle, WA (US); Siyami Millik, Seattle, WA (US); Patrick Smith, Seattle, WA (US); Dylan Karis, Seattle, WA (US); Ashleigh Theberge, Seattle, WA (US); and Ashley Dostie, Seattle, WA (US)
Assigned to University of Washington, Seattle, WA (US)
Appl. No. 17/251,735
Filed by UNIVERSITY OF WASHINGTON, Seattle, WA (US)
PCT Filed Jun. 13, 2019, PCT No. PCT/IB2019/054930
§ 371(c)(1), (2) Date Dec. 11, 2020,
PCT Pub. No. WO2019/239359, PCT Pub. Date Dec. 19, 2019.
Claims priority of provisional application 62/684,540, filed on Jun. 13, 2018.
Claims priority of provisional application 62/843,195, filed on May 3, 2019.
Prior Publication US 2021/0114276 A1, Apr. 22, 2021
Int. Cl. B29C 48/09 (2019.01); B29C 35/08 (2006.01); B29C 48/05 (2019.01); B29C 48/16 (2019.01); B29C 48/30 (2019.01); B29C 48/475 (2019.01); B29C 48/88 (2019.01); C12M 1/12 (2006.01); B29K 77/00 (2006.01); B29K 105/00 (2006.01); B29K 105/24 (2006.01)
CPC B29C 48/09 (2019.02) [B29C 35/0805 (2013.01); B29C 48/05 (2019.02); B29C 48/16 (2019.02); B29C 48/30 (2019.02); B29C 48/475 (2019.02); B29C 48/912 (2019.02); C12M 23/06 (2013.01); C12M 25/14 (2013.01); B29C 2035/0827 (2013.01); B29K 2077/00 (2013.01); B29K 2105/0061 (2013.01); B29K 2105/243 (2013.01); B29K 2105/258 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of fabricating a hydrogel tube, the method comprising:
extruding a hollow cylindrical sheet of a first cross-linkable hydrogel solution from a bell nozzle of a nozzle assembly at room temperature to form a cross-linkable hydrogel tube; and
curing the cross-linkable hydrogel tube to form a cross-linked hydrogel tube, wherein curing the cross-linkable hydrogel tube comprises photo-curing the cross-linkable hydrogel tube by exposure to UV light.